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Mishra SR, Behera BP, Singh VK, Mahapatra KK, Mundkinajeddu D, Bhat D, Minz AM, Sethi G, Efferth T, Das S, Bhutia SK. Anticancer activity of Bacopa monnieri through apoptosis induction and mitophagy-dependent NLRP3 inflammasome inhibition in oral squamous cell carcinoma. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 123:155157. [PMID: 37951147 DOI: 10.1016/j.phymed.2023.155157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 10/16/2023] [Accepted: 10/18/2023] [Indexed: 11/13/2023]
Abstract
BACKGROUND Bacopa monnieri (BM) is traditionally used in human diseases for its antioxidant, anti-inflammatory and neuroprotective effects. However, its anticancer potential has been poorly understood. AIM The aim of this study was to explore the detailed anticancer mechanism of BM against oral cancer and to identify the bioactive BM fraction for possible cancer therapeutics. RESULTS We performed bioactivity-guided fractionation and identified that the aqueous fraction of the ethanolic extract of BM (BM-AF) had a potent anticancer potential in both in vitro and in vivo oral cancer models. BM-AF inhibited cell viability, colony formation, cell migration and induced apoptotic cell death in Cal33 and FaDu cells. BM-AF at low doses promoted mitophagy and BM-AF mediated mitophagy was PARKIN dependent. In addition, BM-AF inhibited arecoline induced reactive oxygen species production in Cal33 cells. Moreover, BM-AF supressed arecoline-induced NLR family pyrin domain containing 3 (NLRP3) inflammasome activation through mitophagy in Cal33 cells. The in vivo antitumor effect of BM-AF was further validated in C57BL/6J mice through a 4-nitroquinolin-1-oxide and arecoline-induced oral cancer model. The tumor incidence was significantly reduced in the BM-AF treated group. Further, data obtained from western blot and immunohistochemistry analysis showed increased expression of apoptotic markers and decreased expression of inflammasome markers in the tongue tissue obtained from BM-AF treated mice in comparison with the non-treated tumor bearing mice. CONCLUSION In conclusion, BM-AF exhibited potent anticancer activity through apoptosis induction and mitophagy-dependent inhibition of NLRP3 inflammasome activation in both in vitro and in vivo oral cancer models. Moreover, we have investigated apoptosis and mitophagy-inducing compounds from this plant extract having anticancer activity against oral cancer cells.
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Affiliation(s)
- Soumya Ranjan Mishra
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology, Rourkela, 769008, Odisha, India
| | - Bishnu Prasad Behera
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology, Rourkela, 769008, Odisha, India
| | | | - Kewal Kumar Mahapatra
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology, Rourkela, 769008, Odisha, India; Current affiliation: Department of Agriculture and Allied Sciences (Zoology), C. V Raman Global University, Bhubaneswar, 752054, Odisha, India
| | | | - Deeksha Bhat
- Research and Development Department, Natural Remedies Pvt. Ltd, India
| | - Aruna Mukti Minz
- Department of Pathology, Ispat General Hospital, Rourkela, India
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, 55128 Mainz, Germany
| | - Surajit Das
- Laboratory of Environmental Microbiology and Ecology, Department of Life Science, National Institute of Technology Rourkela, 769008, Odisha, India
| | - Sujit Kumar Bhutia
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology, Rourkela, 769008, Odisha, India.
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Li J, Bai J, Si X, Jia H, Wu Z. Benzo[a]pyrene induces epithelial tight junction disruption and apoptosis via inhibiting the initiation of autophagy in intestinal porcine epithelial cells. Chem Biol Interact 2023; 374:110386. [PMID: 36754226 DOI: 10.1016/j.cbi.2023.110386] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/29/2023] [Accepted: 02/05/2023] [Indexed: 02/10/2023]
Abstract
Ingestion of food contaminated with benzo[a]pyrene (B[a]P) poses health risks to animals and humans. However, the toxicity of B[a]P exposure on the intestinal barrier function and underlying mechanisms remain obscure. In the present study, intestinal porcine epithelial cells (IPEC-1) were challenged with different doses of B[a]P and its deleterious effects were determined. We found that B[a]P exposure led to impaired intestinal tight junction function as evidenced by reduced transepithelial electric resistance, increased permeability, and downregulated intestinal tight junction protein levels. Further study demonstrated that B[a]P treatment induced cell cycle arrest, and resulted in oxidative damage-related apoptosis in IPEC-1 cells. Intriguingly, we observed an inhibition of autophagy and an activation of unfolded protein response (UPR) in B[a]P-challenged cells, when compared with controls. To investigate the role of autophagy on B[a]P-induced epithelial tight junction disruption and apoptosis, cells were cotreated with B[a]P and rapamycin, and rapamycin dramatically improved intestinal tight junction and reduced apoptosis, indicating a protective effect of autophagy for the cells in response to B[a]P treatment. We also explored the role of UPR in B[a]P-induced cellular damage by using 4-phenylbutyric acid, an antagonist of UPR. Interestingly, B[a]P-induced apoptosis and dysfunction of the intestinal tight junction were exacerbated by 4-phenylbutyric acid, and the 4-phenylbutyric acid didn't ameliorate the inhibitory effects of B[a]P on microtubule-associated protein 1 light chain 3 (LC3-II) and lysosomal-associated membrane protein 2 (LAMP2) in IPEC-1 cells. These novel findings provided herein indicated that B[a]P induces intestinal epithelial tight junction disruption and apoptotic cell death via inhibiting autophagy in IPEC-1 cells.
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Affiliation(s)
- Jun Li
- State Key Laboratory of Animal Nutrition, Department of Companion Animal Science, Nutrition and Feed Science, China Agricultural University, Beijing, 100193, PR China
| | - Jun Bai
- State Key Laboratory of Animal Nutrition, Department of Companion Animal Science, Nutrition and Feed Science, China Agricultural University, Beijing, 100193, PR China
| | - Xuemeng Si
- State Key Laboratory of Animal Nutrition, Department of Companion Animal Science, Nutrition and Feed Science, China Agricultural University, Beijing, 100193, PR China
| | - Hai Jia
- State Key Laboratory of Animal Nutrition, Department of Companion Animal Science, Nutrition and Feed Science, China Agricultural University, Beijing, 100193, PR China
| | - Zhenlong Wu
- State Key Laboratory of Animal Nutrition, Department of Companion Animal Science, Nutrition and Feed Science, China Agricultural University, Beijing, 100193, PR China; Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, 100193, China.
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Abhishek M, Rubal S, Rohit K, Rupa J, Phulen S, Gurjeet K, Raj SA, Manisha P, Alka B, Ramprasad P, Bikash M. Neuroprotective effect of the standardised extract of Bacopa monnieri (BacoMind) in valproic acid model of autism spectrum disorder in rats. JOURNAL OF ETHNOPHARMACOLOGY 2022; 293:115199. [PMID: 35346813 DOI: 10.1016/j.jep.2022.115199] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 03/06/2022] [Accepted: 03/11/2022] [Indexed: 06/14/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Bacopa monnieri (BM) is commonly employed in the Indian traditional system of medicines, i.e. Ayurveda as a memory booster, antioxidant, anti-inflammatory, antipyretic, analgesic, sedative and anti-epileptic for decades. AIM OF THE STUDY To evaluate the neuroprotective effect of Bacopa monnieri (BM) in experimental model of autism spectrum disorder (ASD) in Wistar rats and explore its mechanism of action. MATERIALS AND METHODS BacoMind, was evaluated for its neuroprotective effect in valproic acid (VPA) model of ASD. For in-vivo study, the pregnant female Wistar rats were divided in two groups; normal control (NC) and VPA group who received single dose of normal saline (0.9%) or 600 mg/kg dose of VPA respectively on gestation day (G.D) 12.5. After the birth, all pups were segregated according to the sex. All the male pups from the dams were divided into six groups: Group 1 (NC, treated with only 0.9% normal saline, group 2 (VPA, treated 600 mg/kg on G.D12.5 and normal saline from post natal day (PND) 23 to 43), group 3 (risperidone 2.5 mg/kg, PND 23 to 43) and groups 4, 5 and 6 (BM 20, 40, 80 mg/kg, PND 23 to 43). All experimental groups were subjected to batteries of behavior parameters (three chamber sociability test, Morris Water Maze, elevated plus maze, open field and rota rod test), biochemical parameters such as oxidative stress (GSH, SOD, Catalase, MDA), inflammatory cytokines (Il-1β, IL-6, IL-10, TNF-α), histopathological examination (cresyl violet staining) of hippocampus (HC) and prefrontal cortex (PFC) regions. Further, the mRNA as well as protein expression of AMPA receptor was evaluated using RT-PCR and western blot respectively to study the mechanism of neuroprotective effect of BM. The in-silico analysis followed evaluating the binding profile of different constituents of BacoMind with AMPA receptor. RESULTS The results of the in-vivo study indicated BM at 80 mg/kg ameliorated abnormal behavioral paradigms such as social deficits, repetitive behavior, learning and memory impairments, and motor coordination exhibited by the VPA model of ASD in rats. Furthermore, BM was found to have a significant anti-oxidant (increasing GSH, SOD, and catalase and decreasing MDA levels) and anti-inflammatory properties (decreasing IL-1β, 6, TNF- α). The histopathological score was also found to be significantly improved by BM in a dose dependent manner in both HC and PFC. In addition to this, the up-regulated mRNA as well as protein expression of AMPA receptor was significantly reduced by 80 mg/kg dose of BM in both HC and PFC. Further, the in-silico analysis of different constituents of BacoMind with AMPA receptor demonstrated that luteolin and apigenin showed good binding to both the competitive antagonist binding site, non-competitive antagonist binding site and allosteric modulator site while Bacosaponin C showed good binding to the non-competitive antagonist binding site. CONCLUSION The present study concluded that BM can be a potential candidate for ameliorating the ASD symptoms in rats and acts via modulating the up-regulated AMPA receptor expression.
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Affiliation(s)
- Mishra Abhishek
- Dept. of Pharmacology, Post Graduate Institute of Medical Education & Research (PGIMER), Chandigarh, India.
| | - Singla Rubal
- Dept. of Pharmacology, Post Graduate Institute of Medical Education & Research (PGIMER), Chandigarh, India.
| | - Kumar Rohit
- Dept. of Pharmacology, Post Graduate Institute of Medical Education & Research (PGIMER), Chandigarh, India.
| | - Joshi Rupa
- Dept. of Pharmacology, Post Graduate Institute of Medical Education & Research (PGIMER), Chandigarh, India.
| | - Sarma Phulen
- Dept. of Pharmacology, Post Graduate Institute of Medical Education & Research (PGIMER), Chandigarh, India.
| | - Kaur Gurjeet
- Dept. of Pharmacology, Post Graduate Institute of Medical Education & Research (PGIMER), Chandigarh, India.
| | - Sharma Amit Raj
- Dept. of Neurology, Post Graduate Institute of Medical Education & Research (PGIMER), Chandigarh, India.
| | - Prajapat Manisha
- Dept. of Pharmacology, Post Graduate Institute of Medical Education & Research (PGIMER), Chandigarh, India.
| | - Bhatia Alka
- Dept. of Experimental Medicine and Biotechnology, Post Graduate Institute of Medical Education & Research (PGIMER), Chandigarh, India.
| | | | - Medhi Bikash
- Dept. of Pharmacology, Post Graduate Institute of Medical Education & Research (PGIMER), Chandigarh, India.
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Effects of a Bacopa monnieri extract (Bacognize®) on stress, fatigue, quality of life and sleep in adults with self-reported poor sleep: A randomised, double-blind, placebo-controlled study. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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Gayathri S, Chandrashekar H R, Fayaz S M. Phytotherapeutics Against Alzheimer's Disease: Mechanism, Molecular Targets and Challenges for Drug Development. CNS & NEUROLOGICAL DISORDERS-DRUG TARGETS 2021; 21:409-426. [PMID: 34544351 DOI: 10.2174/1871527320666210920120612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 06/24/2021] [Accepted: 08/30/2021] [Indexed: 11/22/2022]
Abstract
Alzheimer's disease is inflating worldwide and is combatted by only a few approved drugs. At best, these drugs treat symptomatic conditions by targeting cholinesterase and N-methyl-D-aspartate receptors. Most of the clinical trials in progress are focused to develop disease-modifying agents that aim single targets. The 'one drug-one target' approach is failing in the case of Alzheimer's disease due to its labyrinth etiopathogenesis. Traditional medicinal systems like ayurveda uses a holistic approach encompassing legion of medicinal plants exhibiting multimodal activity. Recent advances in high-throughput technologies have catapulted the research in the arena of ayurveda, specifically in identifying plants with potent anti-Alzheimer's disease properties and their phytochemical characterization. Nonetheless, clinical trials of very few herbal medicines are in progress. This review is a compendium of Indian plants and ayurvedic medicines against Alzheimer's disease and their paraphernalia. A record of 230 plants that are found in India with anti-Alzheimer's disease potential and about 500 phytochemicals from medicinal plants has been solicited with the hope of exploring the unexplored. Further, the molecular targets of phytochemicals isolated from commonly used medicinal plants such as Acorus calamus, Bacopa monnieri, Convolvulus pluricaulis, Tinospora cordifolia and Withania somnifera have been reviewed with respect to their multidimensional property such as antioxidant, anti-inflammation, anti-aggregation, synaptic plasticity modulation, cognition and memory enhancing activity. In addition, the strengths, and challenges in ayurvedic medicine that limit its use as mainstream therapy is discussed and a framework for the development of herbal medicine has been proposed.
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Affiliation(s)
- Gayathri S
- Department of Biotechnology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka - 576104. India
| | - Raghu Chandrashekar H
- Department of Pharmaceutical Biotechnology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka - 576104. India
| | - Fayaz S M
- Department of Biotechnology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka - 576104. India
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Mehri S, Barangi S, Zamiri E, Karimi G. The protective effect of melatonin on benzo(a)pyrene-induced brain injury: role of apoptosis and autophagy pathways. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2020; 393:2241-2251. [PMID: 32632567 DOI: 10.1007/s00210-020-01936-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 06/29/2020] [Indexed: 12/22/2022]
Abstract
Benzo(a)pyrene (BaP), a toxic polycyclic aromatic hydrocarbon, is spread in different ways as an environmental pollutant. It has been proposed that BaP can induce toxicity through oxidative stress and apoptosis in vital organs. The present study evaluated the protective effect of melatonin, a circadian hormone of the pineal gland, on BaP-induced neurotoxicity focused on oxidative stress, autophagy, and apoptosis pathways. Thirty male mice in 5 groups were treated daily for 28 consecutive days: (I) control group (BaP and melatonin solvent), (II) BaP (75 mg/kg, orally), (III) and (IV) BaP + melatonin (10 and 20 mg/kg, i.p.), (V) melatonin (20 mg/kg). The oxidative stress markers were determined in the brain. Western blot was conducted for the level of LC3 II/I and Beclin1, as autophagy markers, caspase3 and Bcl2, as apoptosis proteins, and Sirt1 in the brain. The exposure of mice to BaP caused a marked increase in the malondialdehyde (MDA) level and decrease of glutathione (GSH) content in the brain. Furthermore, the Sirt1 level upregulated as well as LC3 II/I, Beclin1, and cleaved caspase3 proteins, while the level of Bcl2 did not change. Melatonin at 20 mg/kg concurrently with BaP restored the BaP alteration in the brain compared with the BaP group. In conclusion, BaP induced brain toxicity via the induction of oxidative stress, apoptosis, and autophagy, whereas melatonin afforded neuroprotection against BaP due to inhibition of these mechanisms.
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Affiliation(s)
- Soghra Mehri
- Pharmaceutical Research Center, Institute of Pharmaceutical Technology, Mashhad University of Medical Sciences, P.O. Box 1365-91775, Mashhad, Iran
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Samira Barangi
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ehsan Zamiri
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Gholamreza Karimi
- Pharmaceutical Research Center, Institute of Pharmaceutical Technology, Mashhad University of Medical Sciences, P.O. Box 1365-91775, Mashhad, Iran.
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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Ghosh S, Khanam R, Acharya Chowdhury A. The Evolving Roles of Bacopa monnieri as Potential Anti-Cancer Agent: A Review. Nutr Cancer 2020; 73:2166-2176. [PMID: 33148034 DOI: 10.1080/01635581.2020.1841248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The intermingled interrelationship of Bacopa monnieri and human health dates backs to the ancient times in the history of ayurveda making the plant an enriched source of alternative drug development in a nontoxic manner. In recent years, research on the biological effects of Bacopa monnieri has flourished as promising neuroprotective, memory boosting and more importantly as both chemopreventive and anti-neoplastic agent. Each naturally synthesized chemical constituent identified from Bacopa monnieri leaf extract with different solvents, has significant anti-metastatic, anti-angiogenic and anti-proliferative activity on different type of cancer cells. In this context, a substantial literature survey allows a deep understanding of the involvement of specific bioactive molecules along with the whole plant extract of Bacopa monnieri with their divergent effective molecular pathways. This comprehensive review covers literature up to the year 2020 highlighting all the anticancer efficacy along with signaling pathways activated by secondary metabolites found in bacopa plant.
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Affiliation(s)
- Sudeepa Ghosh
- Department of Biotechnology, JIS University, Kolkata, West Bengal, India
| | - Rahmat Khanam
- Department of Biotechnology, JIS University, Kolkata, West Bengal, India
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Zhang L, Hou L, Liu Z, Huang S, Meng Z, Liang L. A mitophagic response to iron overload-induced oxidative damage associated with the PINK1/Parkin pathway in pancreatic beta cells. J Trace Elem Med Biol 2020; 60:126493. [PMID: 32179427 DOI: 10.1016/j.jtemb.2020.126493] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 02/23/2020] [Accepted: 02/28/2020] [Indexed: 10/24/2022]
Abstract
BACKGROUND Iron overload can result in a disorder in glucose metabolism. However, the underlining mechanism through which iron overload induces beta cell death remains unknown. METHODS According to the concentration of ferric ammonium citrate (FAC) and N-acetylcysteine, INS-1 cells were randomly divided into four groups: normal control (FAC 0 μM) group, FAC 80 μM group, FAC 160 μM group, FAC 160μM + NAC group. Cell proliferation was assessed by Cell Counting Kit-8. Reactive oxygen species (ROS) level was further evaluated using flow cytometer with a fluorescent probe. The mitochondrial membrane potential was detected by JC-1 kit, and transmission electron microscopy was used to observe the mitochondrial changes. The related protein expressions were detected by western bolt to evaluate mitophagy status. RESULTS It was shown that FAC treatment decreased INS-1 cell viability in vitro, resulted in a decline in mitochondrial membrane potential, increased oxidative stress level and suppressed mitophagy. Furthermore, these effects could be alleviated by the ROS scavenger. CONCLUSIONS We proved that increased iron overload primarily increased oxidative stress and further suppressed mitophagy via PTEN-induced putative kinase 1/Parkin pathway, resulting in cytotoxicity in INS-1 cells.
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Affiliation(s)
- Lina Zhang
- Department of Pediatrics, Sun Yat-sen Memorial Hospital, China
| | - Lele Hou
- Department of Pediatrics, Sun Yat-sen Memorial Hospital, China
| | - Zulin Liu
- Department of Pediatrics, Sun Yat-sen Memorial Hospital, China
| | - Siqi Huang
- Department of Pediatrics, Sun Yat-sen Memorial Hospital, China
| | - Zhe Meng
- Department of Pediatrics, Sun Yat-sen Memorial Hospital, China
| | - Liyang Liang
- Department of Pediatrics, Sun Yat-sen Memorial Hospital, China.
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Barangi S, Mehri S, Moosavi Z, Hayesd AW, Reiter RJ, Cardinali DP, Karimi G. Melatonin inhibits Benzo(a)pyrene-Induced apoptosis through activation of the Mir-34a/Sirt1/autophagy pathway in mouse liver. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 196:110556. [PMID: 32247962 DOI: 10.1016/j.ecoenv.2020.110556] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 03/26/2020] [Accepted: 03/28/2020] [Indexed: 06/11/2023]
Abstract
Benzo(a)pyrene (BaP), an important environmental pollutant, is produced as the result of incomplete combustion of organic materials in many industries and food cooking process. It has been purposed that BaP induces hepatotoxicity through oxidative stress and apoptosis. Several studies have shown that melatonin can protect against chemical-induced apoptosis through autophagy pathway. In this study, we assessed the modulating effect of melatonin, a well-known antioxidant, on BaP-induced hepatotoxicity through induction of autophagy. Thirty male mice were treated daily for 28 consecutive days. BaP (75 mg/kg; oral gavage) and melatonin (10 and 20 mg/kg, i.p.) were administered to mice. The liver histopathology and the levels of apoptosis and autophagy proteins as well as the expression of miR-34a were determined. The BaP exposure induced severe liver histological injury and markedly enhanced AST, ALT and MDA level. Also, apoptosis proteins and hepatic miR-34a expression increased. However, the level of Sirt1 and autophagy markers such as LC3 II/I ratio and Beclin-1 reduced. The co-administration of melatonin reversed all changes caused by BaP. In summary, melatonin appears to be effective in BaP-induced hepatotoxicity maybe through the miR-34a/Sirt1/autophagy molecular pathway.
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Affiliation(s)
- Samira Barangi
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Soghra Mehri
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zahra Moosavi
- Department of Pathobiology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
| | - A Wallace Hayesd
- University of South Florida, Tampa, FL, USA; Michigan State University, East Lansing, MI, USA
| | - Russel J Reiter
- University of Texas, Health Science Center at San Antonio, Department of Cellular and Structural Biology, USA
| | - Daniel P Cardinali
- Faculty of Medical Sciences, Pontificia Universidad Católica Argentina, Aires, Argentina
| | - Gholamreza Karimi
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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Saha S, Mahapatra KK, Mishra SR, Mallick S, Negi VD, Sarangi I, Patil S, Patra SK, Bhutia SK. Bacopa monnieri inhibits apoptosis and senescence through mitophagy in human astrocytes. Food Chem Toxicol 2020; 141:111367. [PMID: 32335210 DOI: 10.1016/j.fct.2020.111367] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 04/11/2020] [Accepted: 04/13/2020] [Indexed: 12/20/2022]
Abstract
Benzo[a]pyrene (B[a]P), a polycyclic aromatic hydrocarbon, is a potent neurotoxic agent that is responsible for impaired neuronal development and is associated with aging. Here, it was demonstrated that extracts of Bacopa monnieri (BM), a traditional Ayurvedic medicine, diminished the B[a]P-induced apoptosis and senescence in human astrocytes. BM was demonstrated to protect the immortalized primary fetal astrocytes (IMPHFA) from B[a]P-induced apoptosis and senescence by reducing the damaged mitochondria that produced reactive oxygen species (ROS). Furthermore, it was shown that B[a]P-triggered G2 arrest could be altered by BM, thus indicating that BM could reverse the cell cycle arrest and mediate a normal cell cycle in IMPHFA cells. In addition, the lifespan of Caenorhabditis elegans was assessed, which confirmed these effects in the presence of BM, compared to the B[a]P-treated group. Furthermore, the anti-senescence and anti-apoptotic activities of BM were observed to be mediated through the protective effect of mitophagy, and inhibition of mitophagy could not protect the astrocytes from mitochondrial ROS-induced apoptosis and senescence in BM-treated cells. Moreover, it was revealed that BM induced Parkin-dependent mitophagy to exert its cytoprotective activity in IMPHFA cells. In conclusion, the anti-senescence and anti-apoptotic effects of BM in astrocytes could combat pollution and aging-related neurological disorders.
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Affiliation(s)
- Sarbari Saha
- Department of Life Science, National Institute of Technology Rourkela, India
| | | | | | - Swarupa Mallick
- Department of Life Science, National Institute of Technology Rourkela, India
| | - Vidya Devi Negi
- Department of Life Science, National Institute of Technology Rourkela, India
| | | | - Sankargouda Patil
- Department of Maxillofacial Surgery and Diagnostic Sciences, Division of Oral Pathology, College of Dentistry, Jazan University, Saudi Arabia
| | - Samir Kumar Patra
- Department of Life Science, National Institute of Technology Rourkela, India
| | - Sujit Kumar Bhutia
- Department of Life Science, National Institute of Technology Rourkela, India.
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Martínez-García GG, Mariño G. Autophagy role in environmental pollutants exposure. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2020; 172:257-291. [PMID: 32620245 DOI: 10.1016/bs.pmbts.2020.02.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
During the last decades, the potential harmfulness derived from the exposure to environmental pollutants has been largely demonstrated, with associated damages ranging from geno- and cyto-toxicity to tissue malfunction and alterations in organism physiology. Autophagy is an evolutionarily-conserved cellular mechanism essential for cellular homeostasis, which contributes to protect cells from a wide variety of intracellular and extracellular stressors. Due to its pivotal importance, its correct functioning is directly linked to cell, tissue and organismal fitness. Environmental pollutants, particularly industrial compounds, are able to impact autophagic flux, either by increasing it as a protective response, by blocking it, or by switching its protective role toward a pro-cell death mechanism. Thus, the understanding of the effects of chemicals exposure on autophagy has become highly relevant, offering new potential approaches for risk assessment, protection and preventive measures to counteract the detrimental effects of environmental pollutants on human health.
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Affiliation(s)
- Gemma G Martínez-García
- Laboratorio "Autofagia y Metabolismo", Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain; Departamento de Biología Funcional, Universidad de Oviedo, Oviedo, Spain
| | - Guillermo Mariño
- Laboratorio "Autofagia y Metabolismo", Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain; Departamento de Biología Funcional, Universidad de Oviedo, Oviedo, Spain.
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Bacosides Encapsulated in Lactoferrin Conjugated PEG-PLA-PCL-OH Based Polymersomes Act as Epigenetic Modulator in Chemically Induced Amnesia. Neurochem Res 2020; 45:796-808. [DOI: 10.1007/s11064-020-02953-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 12/04/2019] [Accepted: 01/02/2020] [Indexed: 12/13/2022]
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Limanaqi F, Biagioni F, Busceti CL, Ryskalin L, Polzella M, Frati A, Fornai F. Phytochemicals Bridging Autophagy Induction and Alpha-Synuclein Degradation in Parkinsonism. Int J Mol Sci 2019; 20:ijms20133274. [PMID: 31277285 PMCID: PMC6651086 DOI: 10.3390/ijms20133274] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 06/30/2019] [Accepted: 07/02/2019] [Indexed: 12/11/2022] Open
Abstract
Among nutraceuticals, phytochemical-rich compounds represent a source of naturally-derived bioactive principles, which are extensively studied for potential beneficial effects in a variety of disorders ranging from cardiovascular and metabolic diseases to cancer and neurodegeneration. In the brain, phytochemicals produce a number of biological effects such as modulation of neurotransmitter activity, growth factor induction, antioxidant and anti-inflammatory activity, stem cell modulation/neurogenesis, regulation of mitochondrial homeostasis, and counteracting protein aggregation through modulation of protein-folding chaperones and the cell clearing systems autophagy and proteasome. In particular, the ability of phytochemicals in restoring proteostasis through autophagy induction took center stage in recent research on neurodegenerative disorders such as Parkinson’s disease (PD). Indeed, autophagy dysfunctions and α-syn aggregation represent two interdependent downstream biochemical events, which concur in the parkinsonian brain, and which are targeted by phytochemicals administration. Therefore, in the present review we discuss evidence about the autophagy-based neuroprotective effects of specific phytochemical-rich plants in experimental parkinsonism, with a special focus on their ability to counteract alpha-synuclein aggregation and toxicity. Although further studies are needed to confirm the autophagy-based effects of some phytochemicals in parkinsonism, the evidence discussed here suggests that rescuing autophagy through natural compounds may play a role in preserving dopamine (DA) neuron integrity by counteracting the aggregation, toxicity, and prion-like spreading of α-syn, which remains a hallmark of PD.
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Affiliation(s)
- Fiona Limanaqi
- Human Anatomy, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa (PI), Italy
| | | | | | - Larisa Ryskalin
- Human Anatomy, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa (PI), Italy
| | - Maico Polzella
- Aliveda Laboratories, Crespina Lorenzana, 56042 Pisa (PI), Italy
| | | | - Francesco Fornai
- Human Anatomy, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa (PI), Italy.
- I.R.C.C.S Neuromed, Via Atinense, 86077 Pozzilli (IS), Italy.
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Jang HS, Lee JE, Myung CH, Park JI, Jo CS, Hwang JS. Particulate Matter-Induced Aryl Hydrocarbon Receptor Regulates Autophagy in Keratinocytes. Biomol Ther (Seoul) 2019; 27:570-576. [PMID: 30971064 PMCID: PMC6824630 DOI: 10.4062/biomolther.2019.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 03/14/2019] [Accepted: 03/18/2019] [Indexed: 12/13/2022] Open
Abstract
Particulate matter (PM), which refers to the mixture of particles present in the air, can have harmful effects. Damage to cells by PM, including disruption of organelles and proteins, can trigger autophagy, and the relationship between autophagy and PM has been well studied. However, the cellular regulators of PM-induced autophagy have not been well characterized, especially in keratinocytes. The Aryl Hydrocarbon Receptor (AhR) is expressed in the epidermis and is activated by PM. In this study, we investigated the role of the AhR in PM-induced autophagy in HaCaT cells. Our results showed that PM led to AhR activation in keratinocytes. Activation of the AhR-target gene CYP1A1 by PM was reduced by co-treatment with α-naphthoflavone (α-NF), an AhR inhibitor. We also evaluated activation of the autophagy pathway in PM-treated keratinocytes. In HaCaT cells, treatment with PM treatment led to the induction of microtubules-associated proteins light chain 3 (LC3) and p62/SQSTM1, which are essential components of the autophagy pathway. To study the role of the AhR in mediating PM-induced autophagy, we treated cells with α-NF or used an siRNA against AhR. Expression of LC3-ІІ induced by PM was decreased in a dose dependent manner by α-NF. Furthermore, knockdown of AhR with siAhR diminished PM-induced expression of LC3-ІІ and p62. Together, these results suggest that inhibition of the AhR decreases PM-induced autophagy. We confirmed these results using the autophagy-inhibitors BAF and 3-MA. Taken together, our results indicate that exposure to PM induces autophagy via the AhR in HaCaT keratinocytes.
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Affiliation(s)
- Hye Sung Jang
- Department of Genetic Engineering & Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Ji Eun Lee
- Department of Genetic Engineering & Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Cheol Hwan Myung
- Department of Genetic Engineering & Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Jong Il Park
- Department of Genetic Engineering & Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Chan Song Jo
- Department of Genetic Engineering & Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Jae Sung Hwang
- Department of Genetic Engineering & Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin 17104, Republic of Korea
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15
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Sukumaran NP, Amalraj A, Gopi S. Neuropharmacological and cognitive effects of Bacopa monnieri (L.) Wettst - A review on its mechanistic aspects. Complement Ther Med 2019; 44:68-82. [PMID: 31126578 DOI: 10.1016/j.ctim.2019.03.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 03/23/2019] [Accepted: 03/25/2019] [Indexed: 12/14/2022] Open
Abstract
Bacopa monnieri (L.) - (BM) is a perennial, creeping herb which is widely used in traditional ayurvedic medicine as a neural tonic to improve intelligence and memory. Research into the biological effects of this plant has burgeoned in recent years, promising its neuroprotective and memory boosting ability among others. In this context, an extensive literature survey allows an insight into the participation of numerous signaling pathways and oxidative mechanism involved in the mitigation of oxidative stress, along with other indirect mechanisms modulated by bioactive molecules of BM to improve the cognitive action by their synergistic potential and cellular multiplicity mechanism. This multi-faceted review describes the novel mechanisms that underlie the unfounded but long flaunted promises of BM and thereby direct a way to harness this acquired knowledge to develop innovative approaches to manipulate its intracellular pathways.
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Affiliation(s)
| | - Augustine Amalraj
- R&D Centre, Aurea Biolabs (P) Ltd, Kolenchery, Cochin 682 311, Kerala, India
| | - Sreeraj Gopi
- R&D Centre, Aurea Biolabs (P) Ltd, Kolenchery, Cochin 682 311, Kerala, India.
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16
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Inevitable dietary exposure of Benzo[a]pyrene: carcinogenic risk assessment an emerging issues and concerns. Curr Opin Food Sci 2018. [DOI: 10.1016/j.cofs.2018.10.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Smith E, Palethorpe HM, Tomita Y, Pei JV, Townsend AR, Price TJ, Young JP, Yool AJ, Hardingham JE. The Purified Extract from the Medicinal Plant Bacopa monnieri, Bacopaside II, Inhibits Growth of Colon Cancer Cells In Vitro by Inducing Cell Cycle Arrest and Apoptosis. Cells 2018; 7:cells7070081. [PMID: 30037060 PMCID: PMC6070819 DOI: 10.3390/cells7070081] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 07/16/2018] [Accepted: 07/18/2018] [Indexed: 12/13/2022] Open
Abstract
Aquaporin-1 (AQP1), a transmembrane pore-forming molecule, facilitates the rapid movement of water and small solutes across cell membranes. We have previously shown that bacopaside II, an extract from the medicinal herb Bacopa monnieri, blocks the AQP1 water channel and impairs migration of cells that express AQP1. The aim of this study was to further elucidate the anti-tumour potential of bacopaside II in colon cancer cells. Expression of AQP1 in HT-29, SW480, SW620 and HCT116 was determined by quantitative PCR and western immunoblot. Cells were treated with bacopaside II, and morphology, growth, autophagy, cell cycle and apoptosis assessed by time-lapse microscopy, crystal violet, acridine orange, propidium iodide (PI) and annexin V/PI staining respectively. AQP1 expression was significantly higher in HT-29 than SW480, SW620 and HCT116. Bacopaside II significantly reduced growth at ≥20 µM for HT-29 and ≥15 µM for SW480, SW620 and HCT116. Inhibition of HT-29 at 20 µM was primarily mediated by G0/G1 cell cycle arrest, and at 30 µM by G2/M arrest and apoptosis. Inhibition of SW480, SW620 and HCT116 at ≥15 µM was mediated by G2/M arrest and apoptosis. These results are the first to show that bacopaside II inhibits colon cancer cell growth by inducing cell cycle arrest and apoptosis.
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Affiliation(s)
- Eric Smith
- Molecular Oncology, Basil Hetzel Institute, The Queen Elizabeth Hospital, Woodville South SA 5011, Australia.
- Adelaide Medical School, University of Adelaide, Adelaide SA 5000, Australia.
| | - Helen M Palethorpe
- Molecular Oncology, Basil Hetzel Institute, The Queen Elizabeth Hospital, Woodville South SA 5011, Australia.
- Adelaide Medical School, University of Adelaide, Adelaide SA 5000, Australia.
| | - Yoko Tomita
- Molecular Oncology, Basil Hetzel Institute, The Queen Elizabeth Hospital, Woodville South SA 5011, Australia.
- Adelaide Medical School, University of Adelaide, Adelaide SA 5000, Australia.
| | - Jinxin V Pei
- Adelaide Medical School, University of Adelaide, Adelaide SA 5000, Australia.
| | - Amanda R Townsend
- Adelaide Medical School, University of Adelaide, Adelaide SA 5000, Australia.
- Medical Oncology, The Queen Elizabeth Hospital, Woodville South SA 5011, Australia.
| | - Timothy J Price
- Adelaide Medical School, University of Adelaide, Adelaide SA 5000, Australia.
- Medical Oncology, The Queen Elizabeth Hospital, Woodville South SA 5011, Australia.
| | - Joanne P Young
- Adelaide Medical School, University of Adelaide, Adelaide SA 5000, Australia.
| | - Andrea J Yool
- Adelaide Medical School, University of Adelaide, Adelaide SA 5000, Australia.
| | - Jennifer E Hardingham
- Molecular Oncology, Basil Hetzel Institute, The Queen Elizabeth Hospital, Woodville South SA 5011, Australia.
- Adelaide Medical School, University of Adelaide, Adelaide SA 5000, Australia.
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He S, Ou R, Wang W, Ji L, Gao H, Zhu Y, Liu X, Zheng H, Liu Z, Wu P, Lu L. Camptosorus sibiricus rupr aqueous extract prevents lung tumorigenesis via dual effects against ROS and DNA damage. JOURNAL OF ETHNOPHARMACOLOGY 2018; 220:44-56. [PMID: 29258855 DOI: 10.1016/j.jep.2017.12.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 12/13/2017] [Accepted: 12/14/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Camptosorus sibiricus Rupr (CSR) is a widely used herbal medicine with antivasculitis, antitrauma, and antitumor effects. However, the effect of CSR aqueous extract on B[a]P-initiated tumorigenesis and the underlying mechanism remain unclear. Moreover, the compounds in CSR aqueous extract need to be identified and structurally characterized. AIM OF THE STUDY We aim to investigate the chemopreventive effect of CSR and the underlying molecular mechanism. MATERIALS AND METHODS A B[a]P-stimulated normal cell model (BEAS.2B) and lung adenocarcinoma animal model were established on A/J mice. In B[a]P-treated BEAS.2B cells, the protective effects of CSR aqueous extract on B[a]P-induced DNA damage and ROS production were evaluated through flow cytometry, Western blot, real-time quantitative PCR, single-cell gel electrophoresis, and immunofluorescence. Moreover, a model of B[a]P-initiated lung adenocarcinoma was established on A/J mice to determine the chemopreventive effect of CSR in vivo. The underlying mechanism was analyzed via immunohistochemistry and microscopy. Furthermore, the new compounds in CSR aqueous extract were isolated and structurally characterized using IR, HR-ESI-MS, and 1D and 2D NMR spectroscopy. RESULTS CSR effectively suppressed ROS production by re-activating Nrf2-mediated reductases HO-1 and NQO-1. Simultaneously, CSR attenuated the DNA damage of BEAS.2B cells in the presence of B[a]P. Moreover, CSR at 1.5 and 3 g/kg significantly suppressed tumorigenesis with tumor inhibition ratios of 36.65% and 65.80%, respectively. The tumor volume, tumor size, and multiplicity of B[a]P-induced lung adenocarcinoma were effectively decreased by CSR in vivo. After extracting and identifying the compounds in CSR aqueous extract, three new triterpene saponins were isolated and characterized structurally. CONCLUSIONS CSR aqueous extract prevents lung tumorigenesis by exerting dual effects against ROS and DNA damage, suggesting that CSR is a novel and effective agent for B[a]P-induced carcinogenesis. Moreover, by isolating and structurally characterizing three new triterpene saponins, our study further standardized the quality of CSR aqueous extract, which could widen CSR clinical applications.
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Affiliation(s)
- Shugui He
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China
| | - Rilan Ou
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China
| | - Wensheng Wang
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China
| | - Liyan Ji
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China
| | - Hui Gao
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China
| | - Yuanfeng Zhu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China
| | - Xiaomin Liu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China
| | - Hongming Zheng
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China
| | - Zhongqiu Liu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China; State Key Laboratory of Quality Research in Chinese Medicine/Macau Institute For Applied Research in Medicine and Health, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau, China
| | - Peng Wu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China.
| | - Linlin Lu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, 232 Waihuan Dong Road, Guangzhou, Guangdong 510006, China; State Key Laboratory of Quality Research in Chinese Medicine/Macau Institute For Applied Research in Medicine and Health, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau, China.
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19
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Wu Q, Wang X, Nepovimova E, Miron A, Liu Q, Wang Y, Su D, Yang H, Li L, Kuca K. Trichothecenes: immunomodulatory effects, mechanisms, and anti-cancer potential. Arch Toxicol 2017; 91:3737-3785. [PMID: 29152681 DOI: 10.1007/s00204-017-2118-3] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 11/08/2017] [Indexed: 12/11/2022]
Abstract
Paradoxically, trichothecenes have both immunosuppressive and immunostimulatory effects. The underlying mechanisms have not been fully explored. Early studies show that dose, exposure timing, and the time at which immune function is assessed influence whether trichothecenes act in an immunosuppressive or immunostimulatory fashion. Recent studies suggest that the immunomodulatory function of trichothecenes is also actively shaped by competing cell-survival and death-signaling pathways. Autophagy may also promote trichothecene immunosuppression, although the mechanism may be complicated. Moreover, trichothecenes may generate an "immune evasion" milieu that allows pathogens to escape host and vaccine immune defenses. Some trichothecenes, especially macrocyclic trichothecenes, also potently kill cancer cells. T-2 toxin conjugated with anti-cancer monoclonal antibodies significantly suppresses the growth of thymoma EL-4 cells and colon cancer cells. The type B trichothecene diacetoxyscirpenol specifically inhibits the tumor-promoting factor HIF-1 in cancer cells under hypoxic conditions. Trichothecin markedly inhibits the growth of multiple cancer cells with constitutively activated NF-κB. The type D macrocyclic toxin Verrucarin A is also a promising therapeutic candidate for leukemia, breast cancer, prostate cancer, and pancreatic cancer. The anti-cancer activities of trichothecenes have not been comprehensively summarized. Here, we first summarize the data on the immunomodulatory effects of trichothecenes and discuss recent studies that shed light on the underlying cellular and molecular mechanisms. These mechanisms include autophagy and major signaling pathways and their crosstalk. Second, the anti-cancer potential of trichothecenes and the underlying mechanisms will be discussed. We hope that this review will show how trichothecene bioactivities can be exploited to generate therapies against pathogens and cancer.
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Affiliation(s)
- Qinghua Wu
- College of Life Science, Institute of Biomedicine, Yangtze University, Jingzhou, 434025, China. .,Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic.
| | - Xu Wang
- National Reference Laboratory of Veterinary Drug Residues (HZAU) and MAO Key Laboratory for Detection of Veterinary Drug Residues, Huazhong Agricultural University, Wuhan, 430070, China
| | - Eugenie Nepovimova
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
| | - Anca Miron
- Department of Pharmacognosy, Faculty of Pharmacy, University of Medicine and Pharmacy Grigore T. Popa, Iasi, Romania
| | - Qianying Liu
- National Reference Laboratory of Veterinary Drug Residues (HZAU) and MAO Key Laboratory for Detection of Veterinary Drug Residues, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yun Wang
- College of Life Science, Institute of Biomedicine, Yangtze University, Jingzhou, 434025, China
| | - Dongxiao Su
- College of Life Science, Institute of Biomedicine, Yangtze University, Jingzhou, 434025, China
| | - Hualin Yang
- College of Life Science, Institute of Biomedicine, Yangtze University, Jingzhou, 434025, China
| | - Li Li
- College of Life Science, Institute of Biomedicine, Yangtze University, Jingzhou, 434025, China
| | - Kamil Kuca
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic.
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Das DN, Naik PP, Mukhopadhyay S, Panda PK, Sinha N, Meher BR, Bhutia SK. Elimination of dysfunctional mitochondria through mitophagy suppresses benzo[a]pyrene-induced apoptosis. Free Radic Biol Med 2017; 112:452-463. [PMID: 28843778 DOI: 10.1016/j.freeradbiomed.2017.08.020] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 08/20/2017] [Accepted: 08/22/2017] [Indexed: 01/10/2023]
Abstract
Mitophagy, a special type of autophagy, plays an important role in the mitochondria quality control and cellular homeostasis. In this study, we examined the molecular mechanism of mitophagy induction with benzo[a]pyrene (B[a]P), a ubiquitous polycyclic aromatic hydrocarbon, which acts as a prosurvival response against apoptotic cell death. Our study showed that B[a]P displayed higher cytotoxicity in autophagy-deficient HaCaT cells as compared to control. Further, we showed that B[a]P triggered the Beclin-1-dependent autophagy through the mammalian target of rapamycin (mTOR)/AMP-activated protein kinase (AMPK) pathway. Moreover, our study indicated that the B[a]P-induced autophagy was initiated through the activation of cytochrome P450 1B1 (CYP1B1) and the aryl hydrocarbon receptor (AhR) in HaCaT cells. Intriguingly, the B[a]P-induced Beclin-1-mediated mitophagy was suppressed in CYP1B1 and AhR knockdown HaCaT cells, indicating a crucial role of B[a]P activation in the mitophagy induction to regulate cell death. B[a]P was shown to increase the mitochondrial dysfunction and decrease the mitochondrial membrane potential, resulting in depletion of ATP level along with the inhibition of the oxygen consumption rate in HaCaT cells. Importantly, the supplementation of methyl pyruvate compensated for the B[a]P-induced drop in the ATP level and mitigated the reactive oxygen species burden and autophagy. Mechanistically, B[a]P inhibited the manganese superoxide dismutase (MnSOD) activity and we found that the activated mitochondrial CYP1B1 interacted with MnSOD, inflicting mitophagy to protect from B[a]P-induced apoptosis. In summary, our study reveals mitophagy induction as a cellular protection mechanism against B[a]P-triggered toxicity and carcinogenesis.
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Affiliation(s)
- Durgesh Nandini Das
- Department of Life Science, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India
| | - Prajna Paramita Naik
- Department of Life Science, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India
| | - Subhadip Mukhopadhyay
- Department of Life Science, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India
| | - Prashanta Kumar Panda
- Department of Life Science, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India
| | - Niharika Sinha
- Department of Life Science, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India
| | - Biswa Ranjan Meher
- Centre for Life Sciences, Central University of Jharkhand, Brambe, Ranchi 835205, Jharkhand, India
| | - Sujit K Bhutia
- Department of Life Science, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India.
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Kim SM, Lee HM, Hwang KA, Choi KC. Benzo(a)pyrene induced cell cycle arrest and apoptosis in human choriocarcinoma cancer cells through reactive oxygen species-induced endoplasmic reticulum-stress pathway. Food Chem Toxicol 2017; 107:339-348. [DOI: 10.1016/j.fct.2017.06.048] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 06/28/2017] [Accepted: 06/30/2017] [Indexed: 11/25/2022]
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Omidian K, Rafiei H, Bandy B. Polyphenol inhibition of benzo[a]pyrene-induced oxidative stress and neoplastic transformation in an in vitro model of carcinogenesis. Food Chem Toxicol 2017; 106:165-174. [DOI: 10.1016/j.fct.2017.05.037] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 05/16/2017] [Accepted: 05/18/2017] [Indexed: 12/18/2022]
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23
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Das DN, Panda PK, Naik PP, Mukhopadhyay S, Sinha N, Bhutia SK. Phytotherapeutic approach: a new hope for polycyclic aromatic hydrocarbons induced cellular disorders, autophagic and apoptotic cell death. Toxicol Mech Methods 2017; 27:1-17. [PMID: 27919191 DOI: 10.1080/15376516.2016.1268228] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) comprise the major class of cancer-causing chemicals and are ranked ninth among the chemical compounds threatening to humans. Moreover, interest in PAHs has been mainly due to their genotoxic, teratogenic, mutagenic and carcinogenic property. Polymorphism in cytochrome P450 (CYP450) and aryl hydrocarbon receptor (AhR) has the capacity to convert procarcinogens into carcinogens, which is an imperative factor contributing to individual susceptibility to cancer development. The carcinogenicity potential of PAHs is related to their ability to bind to DNA, thereby enhances DNA cross-linking, causing a series of disruptive effects which can result in tumor initiation. They induce cellular toxicity by regulating the generation of reactive oxygen species (ROS), which arbitrate apoptosis. Additionally, cellular toxicity-mediated apoptotic and autophagic cell death and immune suppression by industrial pollutants PAH, provide fertile ground for the proliferation of mutated cells, which results in cancer growth and progression. PAHs play a foremost role in angiogenesis necessary for tumor metastasization by promoting the upregulation of metalloproteinase-9 (MMP-9), vascular endothelial growth factor (VEGF) and hypoxia inducible factor (HIF) in human cancer cells. This review sheds light on the molecular mechanisms of PAHs induced cancer development as well as autophagic and apoptotic cell death. Besides that authors have unraveled how phytotherapeutics is an alternate potential therapeutics acting as a savior from the toxic effects of PAHs for safer and cost effective perspectives.
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Affiliation(s)
- Durgesh Nandini Das
- a Department of Life Sciences , National Institute of Technology , Rourkela , India
| | | | - Prajna Paramita Naik
- a Department of Life Sciences , National Institute of Technology , Rourkela , India
| | | | - Niharika Sinha
- a Department of Life Sciences , National Institute of Technology , Rourkela , India
| | - Sujit K Bhutia
- a Department of Life Sciences , National Institute of Technology , Rourkela , India
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